Merge pull request #1059 from jkczyz/2021-08-payment-retry

Payment Retries

fuzz/src/full_stack.rs

@@ -38,7 +38,7 @@ use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor,Ig
 use lightning::ln::msgs::DecodeError;
 use lightning::ln::script::ShutdownScript;
 use lightning::routing::network_graph::{NetGraphMsgHandler, NetworkGraph};
-use lightning::routing::router::{get_route, Payee};
+use lightning::routing::router::{find_route, Payee, RouteParameters};
 use lightning::routing::scorer::Scorer;
 use lightning::util::config::UserConfig;
 use lightning::util::errors::APIError;
@@ -437,9 +437,14 @@ pub fn do_test(data: &[u8], logger: &Arc<dyn Logger>) {
 				}
 			},
 			4 => {
-				let value = slice_to_be24(get_slice!(3)) as u64;
+				let final_value_msat = slice_to_be24(get_slice!(3)) as u64;
 				let payee = Payee::new(get_pubkey!());
-				let route = match get_route(&our_id, &payee, &net_graph_msg_handler.network_graph, None, value, 42, Arc::clone(&logger), &scorer) {
+				let params = RouteParameters {
+					payee,
+					final_value_msat,
+					final_cltv_expiry_delta: 42,
+				};
+				let route = match find_route(&our_id, &params, &net_graph_msg_handler.network_graph, None, Arc::clone(&logger), &scorer) {
 					Ok(route) => route,
 					Err(_) => return,
 				};
@@ -455,9 +460,14 @@ pub fn do_test(data: &[u8], logger: &Arc<dyn Logger>) {
 				}
 			},
 			15 => {
-				let value = slice_to_be24(get_slice!(3)) as u64;
+				let final_value_msat = slice_to_be24(get_slice!(3)) as u64;
 				let payee = Payee::new(get_pubkey!());
-				let mut route = match get_route(&our_id, &payee, &net_graph_msg_handler.network_graph, None, value, 42, Arc::clone(&logger), &scorer) {
+				let params = RouteParameters {
+					payee,
+					final_value_msat,
+					final_cltv_expiry_delta: 42,
+				};
+				let mut route = match find_route(&our_id, &params, &net_graph_msg_handler.network_graph, None, Arc::clone(&logger), &scorer) {
 					Ok(route) => route,
 					Err(_) => return,
 				};

fuzz/src/router.rs

@@ -16,7 +16,7 @@ use lightning::chain::transaction::OutPoint;
 use lightning::ln::channelmanager::{ChannelDetails, ChannelCounterparty};
 use lightning::ln::features::InitFeatures;
 use lightning::ln::msgs;
-use lightning::routing::router::{get_route, Payee, RouteHint, RouteHintHop};
+use lightning::routing::router::{find_route, Payee, RouteHint, RouteHintHop, RouteParameters};
 use lightning::routing::scorer::Scorer;
 use lightning::util::logger::Logger;
 use lightning::util::ser::Readable;
@@ -250,10 +250,14 @@ pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 				}
 				let scorer = Scorer::new(0);
 				for target in node_pks.iter() {
-					let payee = Payee::new(*target).with_route_hints(last_hops.clone());
-					let _ = get_route(&our_pubkey, &payee, &net_graph,
+					let params = RouteParameters {
+						payee: Payee::new(*target).with_route_hints(last_hops.clone()),
+						final_value_msat: slice_to_be64(get_slice!(8)),
+						final_cltv_expiry_delta: slice_to_be32(get_slice!(4)),
+					};
+					let _ = find_route(&our_pubkey, &params, &net_graph,
 						first_hops.map(|c| c.iter().collect::<Vec<_>>()).as_ref().map(|a| a.as_slice()),
-						slice_to_be64(get_slice!(8)), slice_to_be32(get_slice!(4)), Arc::clone(&logger), &scorer);
+						Arc::clone(&logger), &scorer);
 				}
 			},
 		}

lightning-invoice/src/lib.rs

@@ -15,11 +15,12 @@
 //!   * For parsing use `str::parse::<Invoice>(&self)` (see the docs of `impl FromStr for Invoice`)
 //!   * For constructing invoices use the `InvoiceBuilder`
 //!   * For serializing invoices use the `Display`/`ToString` traits
+pub mod payment;
 pub mod utils;
 
 extern crate bech32;
 extern crate bitcoin_hashes;
-extern crate lightning;
+#[macro_use] extern crate lightning;
 extern crate num_traits;
 extern crate secp256k1;
 
@@ -1187,6 +1188,19 @@ impl Invoice {
 			.unwrap_or(Duration::from_secs(DEFAULT_EXPIRY_TIME))
 	}
 
+	/// Returns whether the invoice has expired.
+	pub fn is_expired(&self) -> bool {
+		Self::is_expired_from_epoch(self.timestamp(), self.expiry_time())
+	}
+
+	/// Returns whether the expiry time from the given epoch has passed.
+	pub(crate) fn is_expired_from_epoch(epoch: &SystemTime, expiry_time: Duration) -> bool {
+		match epoch.elapsed() {
+			Ok(elapsed) => elapsed > expiry_time,
+			Err(_) => false,
+		}
+	}
+
 	/// Returns the invoice's `min_final_cltv_expiry` time, if present, otherwise
 	/// [`DEFAULT_MIN_FINAL_CLTV_EXPIRY`].
 	pub fn min_final_cltv_expiry(&self) -> u64 {
@@ -1219,8 +1233,13 @@ impl Invoice {
 		self.signed_invoice.currency()
 	}
 
+	/// Returns the amount if specified in the invoice as millisatoshis.
+	pub fn amount_milli_satoshis(&self) -> Option<u64> {
+		self.signed_invoice.amount_pico_btc().map(|v| v / 10)
+	}
+
 	/// Returns the amount if specified in the invoice as pico <currency>.
-	pub fn amount_pico_btc(&self) -> Option<u64> {
+	fn amount_pico_btc(&self) -> Option<u64> {
 		self.signed_invoice.amount_pico_btc()
 	}
 }
@@ -1867,6 +1886,7 @@ mod test {
 		assert!(invoice.check_signature().is_ok());
 		assert_eq!(invoice.tagged_fields().count(), 10);
 
+		assert_eq!(invoice.amount_milli_satoshis(), Some(123));
 		assert_eq!(invoice.amount_pico_btc(), Some(1230));
 		assert_eq!(invoice.currency(), Currency::BitcoinTestnet);
 		assert_eq!(
@@ -1913,5 +1933,33 @@ mod test {
 
 		assert_eq!(invoice.min_final_cltv_expiry(), DEFAULT_MIN_FINAL_CLTV_EXPIRY);
 		assert_eq!(invoice.expiry_time(), Duration::from_secs(DEFAULT_EXPIRY_TIME));
+		assert!(!invoice.is_expired());
+	}
+
+	#[test]
+	fn test_expiration() {
+		use ::*;
+		use secp256k1::Secp256k1;
+		use secp256k1::key::SecretKey;
+
+		let timestamp = SystemTime::now()
+			.checked_sub(Duration::from_secs(DEFAULT_EXPIRY_TIME * 2))
+			.unwrap();
+		let signed_invoice = InvoiceBuilder::new(Currency::Bitcoin)
+			.description("Test".into())
+			.payment_hash(sha256::Hash::from_slice(&[0;32][..]).unwrap())
+			.payment_secret(PaymentSecret([0; 32]))
+			.timestamp(timestamp)
+			.build_raw()
+			.unwrap()
+			.sign::<_, ()>(|hash| {
+				let privkey = SecretKey::from_slice(&[41; 32]).unwrap();
+				let secp_ctx = Secp256k1::new();
+				Ok(secp_ctx.sign_recoverable(hash, &privkey))
+			})
+			.unwrap();
+		let invoice = Invoice::from_signed(signed_invoice).unwrap();
+
+		assert!(invoice.is_expired());
 	}
 }